Interjection
Usually written in kana
1.  I'm sorry;  my apologies;  excuse me;  pardon me
2.  may I come in?
Noun
Honorific
Usually written in kana
3.  permission;  leave;  license
4.  dismissal;  discharge
5.  not wanting;  objecting to;  being fed up with;  wishing to avoid
usu. as 〜はごめんだ